American Zionism has made any serious public discussion of the past or future of Israel — by far the largest recipient ever of US foreign aid — a taboo. To call this quite literally the last taboo in American public life would not be an exaggeration. Abortion, homosexuality, the death penalty, even the sacrosanct military budget can be discussed with some freedom. The extermination of native Americans can be admitted, the morality of Hiroshima attacked, the national flag publicly committed to the flames. But the systematic continuity of Israel’s 52-year-old oppression and maltreatment of the Palestinians is virtually unmentionable, a narrative that has no permission to appear.